1104

1104 (MCIV) was a leap year starting on Friday of the Julian calendar, the 1104th year of the Common Era (CE) and Anno Domini (AD) designations, the 104th year of the 2nd millennium, the 4th year of the 12th century, and the 5th year of the 1100s decade. As of the start of 1104, the Gregorian calendar was 7 days ahead of the Julian calendar, which was the dominant calendar of the time.

1104 in other calendars

Gregorian calendar	1104 MCIV
Ab urbe condita	1857
Armenian calendar	553 ԹՎ ՇԾԳ
Assyrian calendar	5854
Balinese saka calendar	1025–1026
Bengali calendar	511
Berber calendar	2054
English Regnal year	4 Hen. 1 – 5 Hen. 1
Buddhist calendar	1648
Burmese calendar	466
Byzantine calendar	6612–6613
Chinese calendar	癸未年 (Water Goat) 3800 or 3740     — to — 甲申年 (Wood Monkey) 3801 or 3741
Coptic calendar	820–821
Discordian calendar	2270
Ethiopian calendar	1096–1097
Hebrew calendar	4864–4865
Hindu calendars
- Vikram Samvat	1160–1161
- Shaka Samvat	1025–1026
- Kali Yuga	4204–4205
Holocene calendar	11104
Igbo calendar	104–105
Iranian calendar	482–483
Islamic calendar	497–498
Japanese calendar	Kōwa 6 / Chōji 1 (長治元年)
Javanese calendar	1009–1010
Julian calendar	1104 MCIV
Korean calendar	3437
Minguo calendar	808 before ROC 民前808年
Nanakshahi calendar	−364
Seleucid era	1415/1416 AG
Thai solar calendar	1646–1647
Tibetan calendar	ཆུ་མོ་ལུག་ལོ་ (female Water-Sheep) 1230 or 849 or 77     — to — ཤིང་ཕོ་སྤྲེ་ལོ་ (male Wood-Monkey) 1231 or 850 or 78

Events

• September 3 – St. Cuthbert reburied in the Durham Cathedral
• The Venice Arsenal, is founded in Venice.
• Alfonso I of Aragon becomes King of Aragon and Navarre.
• Historian Guibert of Nogent becomes abbot of Notre Dame de Nogent.
• Baldwin I of Jerusalem captures Acre.
• Baldwin II, count of Edessa, is taken prisoner by the Seljuk Turks at the Battle of Harran; Tancred becomes regent.
• Kilij Arslan I, Sultan of Rüm, starts a war with the Danishmends.